Samarium Polystibides Derived from Highly Activated Nanoscale Antimony,Angewandte Chemie International Edition

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Samarium Polystibides Derived from Highly Activated Nanoscale Antimony
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-04-14 , DOI: 10.1002/anie.201802250
Christoph Schoo ₁ , Sebastian Bestgen ₁ , Alexander Egeberg ₁ , Svetlana Klementyeva ₁ , Claus Feldmann ₁ , Sergey N. Konchenko _{1,

2,

3} , Peter W. Roesky ₁

Affiliation

Zintl ions in molecular compounds are of fundamental interest for basic research and application. Two reactive antimony sources are presented that allow direct access to molecular polystibide compounds. These are Sb amalgam (Sb/Hg) and ultrasmall Sb⁰ nanoparticles (d=6.6±0.8 nm), which were used independently as precursors for the synthesis of the largest f‐element polystibide, [(Cp*₂Sm)₄Sb₈]. Whereas the reaction of the nanoparticles with [Cp*₂Sm] directly led to [(Cp*₂Sm)₄Sb₈], Sm/Sb/Hg intermediates were isolated when using Sb/Hg as the precursor. These Sm/Sb/Hg intermediates [{(Cp*₂Sm)₂Sb}₂(μ‐Hg)] and [{(Cp*₂Sm)₃(μ⁴,η^1:2:2:2‐Sb₄)}₂Hg] were synthetically trapped and structurally characterized, giving insight in the formation mechanism of polystibide compounds.

中文翻译：

Poly多糖由高度活化的纳米锑衍生而来

分子化合物中的Zintl离子对于基础研究和应用具有根本的意义。提出了两种反应性锑源，它们可以直接进入分子多硫化物化合物。这些是Sb汞齐（Sb / Hg）和超小Sb ⁰纳米颗粒（d = 6.6±0.8 nm），它们分别用作合成最大f元素多锑化物的前体[[Cp * ₂ Sm）₄ Sb ₈ ]。纳米粒子与[Cp * ₂ Sm]的反应直接导致[（Cp * ₂ Sm）₄ Sb ₈ ]，而使用Sb / Hg作为前体时，则分离出Sm / Sb / Hg中间体。这些Sm / Sb / Hg中间体[{（Cp * ₂SM）₂的Sb} ₂（μ-汞柱）]和[{（CP * ₂ SM）₃（μ ⁴，η ^{1：2：2：2} -Sb ₄）} ₂汞柱]进行综合捕获和结构表征，得到对多硫化物化合物形成机理的见解。

更新日期：2018-04-14

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